They have a very anti immigration culture, and the one child policy means they’ll have more retirees than working age in a decade or two.
And it’ll only get worse as given their less than replacement birth rate and substantially more males than females.
A slightly aged China will still be able to field more military age men than the whole of Western bloc combined.
In the age of nuclear weapons having a large population might actually be a liability since you have more civilians that need to be defended.
You probably never heard of Mao's most famous catchphrase, reflecting perfectly on the thinking of people like Xi Jinping.
You know, the one that went over like a lead ballon and likely cost Hillary the 2016 election?
Likelihood that this kind of treaty coming into force now is essentially nil.
I don't see how he can. I don't see how the next 2-3 US administrations can.
If the current level of China's "scare power" is enough to paralyze the US, you will have less, and less options on the table with each year as you go.
Time works against the US, and the West at large.